JP6917697B2 - Information display method and information display device - Google Patents

Description

The present invention relates to an information display method and an information display device.

Conventionally, a display unit of an in-vehicle device is arranged in the vehicle interior of a vehicle. On the display unit, for example, navigation information for guiding the route to the destination or performance information such as audio is displayed according to the function in which the in-vehicle device is operating.

Further, in recent years, it has been proposed to equip a vehicle with a head-up display (HUD) that displays information on the windshield of the vehicle.

By using the HUD, the field of view and the information are displayed in an overlapping manner, so that the driver can read the information while turning his / her line of sight forward, and is expected to promote safe driving while driving.

In Patent Document 1, when the driver detects the driver's gaze on the display unit in the console panel for a predetermined time or longer, the display of the display unit is stopped and displayed on the display unit. We are proposing to display the content on the HUD.

As described above, a technique has been proposed in which attention to the display unit in the console panel, which hinders the driver's driving, is suppressed and information is continuously presented to the driver.

Japanese Unexamined Patent Publication No. 2013-020334

While the vehicle is running, the driver turns his gaze forward to drive, but sometimes he looks at the speedometer display on the console panel to check the speed of the vehicle, and also the navigation system, etc. The route may be confirmed by directing the line of sight to the display unit provided in the in-vehicle device.

On the other hand, when a change occurs in the situation such as the appearance of a pedestrian or an oncoming vehicle in front, the driver must return his / her line of sight to the front, so that the speed or the route may not be sufficiently confirmed.

Further, moving the line of sight many times between the front and the display unit of the speedometer or the in-vehicle device may cause a decrease in concentration or attention to driving.

Therefore, it is an object of the present specification to provide an information display method and an information display device capable of reducing the frequency of movement of the driver's line of sight.

According to the information display method disclosed in the present specification, when the user's line-of-sight direction is detected and the user's line-of-sight direction moves from the first display unit to the second display unit, it is displayed on the first display unit. It is provided that at least a part of the displayed information is displayed on the second display unit.

Further, according to the information display device disclosed in the present specification, the first display unit, the second display unit, the line-of-sight detection unit that detects the user's line-of-sight direction, and the user's line-of-sight detected by the line-of-sight detection unit. A process of displaying at least a part of the information displayed on the first display unit on the second display unit when the direction moves from the first display unit to the second display unit. It has a part and.

According to the information display method disclosed in the present specification described above, it is possible to reduce the frequency of movement of the driver's line of sight.

Further, according to the information display device disclosed in the present specification described above, it is possible to reduce the frequency of movement of the driver's line of sight.

It is a figure which shows the hardware configuration of the 1st Embodiment of the information display system disclosed in this specification. It is a figure which shows the HUD, the instrument display part and the vehicle-mounted device display part. It is a flowchart (the 1) explaining the operation of the information display system of 1st Embodiment. It is a flowchart (the 2) explaining the operation of the information display system of 1st Embodiment. It is a flowchart (3) explaining the operation of the information display system of 1st Embodiment. It is a figure which shows the object image displayed on the HUD. It is a figure which shows the HUD, the instrument display part and the vehicle-mounted device display part in the 2nd Embodiment of the information display system disclosed in this specification. It is a figure which shows the image displayed on the in-vehicle device display part. It is a flowchart explaining operation of the information display system of 2nd Embodiment. It is a figure which shows the object image displayed on the HUD.

Hereinafter, a preferred first embodiment of the information display system disclosed in the present specification will be described with reference to the drawings. However, the technical scope of the present invention is not limited to those embodiments, but extends to the inventions described in the claims and their equivalents.

FIG. 1 is a diagram showing a hardware configuration of a first embodiment of an information display system including an information display device disclosed in the present specification. FIG. 2 is a diagram showing a head-up display (HUD), an instrument display unit, and an in-vehicle device display unit.

The information display system 1 of the present embodiment is mounted on a vehicle and displays information and the like used for driving by a driver.

The information display system 1 includes a head-up display (HUD) 21 that is superimposed on the windshield of the vehicle, an instrument display 22 that displays the speed and rotation speed of the vehicle, and the like as display units for displaying information. The vehicle-mounted device display unit 13 included in the device 10 is provided.

As shown in FIG. 2, the HUD 21, the instrument display unit 22, and the in-vehicle device display unit 13 are visibly arranged in front of the driver 40. Here, the speedometer image 22a showing the vehicle speed and the speedometer image 22b showing the engine speed are displayed on the instrument display unit 22.

While the vehicle is running, the driver 40 is driving with his / her line of sight directed forward, but sometimes he / she turns his / her line of sight to the instrument display unit 22 to check the speed information of the vehicle and the in-vehicle device display unit. Look at 13 and check the navigation information and so on.

In the example shown in FIG. 2, the line of sight of the driver 40 was initially directed forward through the HUD 21, but then moved to the speedometer image 22a displayed on the instrument display 22 and then passed through the HUD again. Moving forward.

The information display system 1 detects the direction of the user's line of sight, and when the user's line of sight moves from the instrument display unit 22 or the in-vehicle device display unit 13 to the HUD 21, it is displayed on the instrument display unit 22 or the in-vehicle device display unit 13. At least a part of the displayed information is displayed on the HUD 21 to support the user's driving while driving.

As shown in FIG. 1, the information display system 1 includes an in-vehicle device 10, a camera 20, a HUD 21, an instrument display unit 22, and a GPS information receiving unit 30.

The camera 20 is arranged above the HUD 21. The camera 20 captures an image including the eyes of the driver 40 and transmits the captured image to the in-vehicle device 10. For example, the camera 20 may compress the image data of the captured image to reduce the information capacity, and then transmit the image data to the in-vehicle device 10.

The HUD 21 displays information by superimposing it on the windshield of the vehicle. The HUD 21 is controlled by the in-vehicle device 10 to display various types of information. The driver 40 can visually recognize the information displayed on the HUD 21 with his / her line of sight directed forward.

The instrument display unit 22 is arranged on the center console in front of the driver 40, and displays information related to vehicle operation such as vehicle speed information and engine speed information. The instrument display unit 22 is controlled by the in-vehicle device 10 to display various types of information. As the instrument display unit 22, for example, a liquid crystal display can be used.

The in-vehicle device 10 includes a processing unit 11, a storage unit 12, an in-vehicle device display unit 13, an input unit 14, a disk drive 15, and a communication unit 16.

The processing unit 11 has one or more processors and peripheral circuits. The processing unit 11 controls each hardware component of the in-vehicle device 10 and performs various processes according to a predetermined program 12a stored in the storage unit 12 in advance, and temporarily stores the data generated during the process. The storage unit 12 is used.

The storage unit 12 may have a semiconductor memory such as a random access memory (RAM) or a read-only memory (ROM), or a non-volatile memory such as a magnetic disk or a flash memory. Further, the storage unit 12 may use the disk drive 15 as a drive capable of reading a non-temporary storage medium for storing the predetermined program 12a.

The in-vehicle device display unit 13 is arranged in the center console and can be controlled by the processing unit 11 to display various information accompanying the operation of the in-vehicle device 10. As the in-vehicle device display unit 13, for example, a liquid crystal display can be used.

The input unit 14 is operated by the driver 40 and can input the operation. As the input unit 14, the vehicle-mounted device 10 can use, for example, a touch panel arranged on the screen of the vehicle-mounted device display unit 13.

The disk drive 15 stores a disc-shaped storage medium, is controlled by the processing unit 11, reads content such as music data or video data written in the storage medium, and outputs the read data to the processing unit 11. do.

The communication unit 16 communicates with a local area network (Car Area Network: CAN) mounted on the vehicle. The communication unit 16 is connected to the ECU via the CAN, and receives vehicle signals such as vehicle speed information and engine speed information from the ECU. Further, the communication unit 16 communicates with the camera 20 and receives image data from the camera 20. Further, the communication unit 16 transmits the image data to be displayed to the HUD 21 and the instrument display unit 22.

Further, in the vehicle-mounted device 10, position information indicating the position of the vehicle is input from the GPS information receiving unit 30 mounted on the vehicle. The GPS information receiving unit 30 receives the GPS radio wave transmitted by the GPS artificial satellite, obtains the position of the vehicle, and outputs the position information of the vehicle to the in-vehicle device 10.

The processing unit 11 described above includes a line-of-sight detection unit 11a, a display information control unit 11b, a HUD display control unit 11c, an instrument display control unit 11d, a navigation unit 11e, and an audio unit 11f.

Each of these units included in the processing unit 11 is, for example, a functional module realized by a computer program running on the processor included in the processing unit 11.

The line-of-sight detection unit 11a detects the line-of-sight direction of the driver 40 based on the image data of the image taken by the camera 20. As a method of detecting the line-of-sight direction of the driver 40, for example, a method of using the positional relationship with the reference point as the inner corner of the eye and the moving point as the iris, or a method of using the reference point as the position of the corneal reflex from the light source and the moving point as the pupil. A known technique such as a method using a positional relationship can be used.

The display information control unit 11b determines the gaze position of the driver 40 based on the line-of-sight direction of the driver 40, the position of the driver 40 in the vehicle, and the position of each component such as the HUD 21 in the vehicle. For example, in the display information control unit 11b, the display unit to which the driver 40's line of sight is directed is the HUD 21, the instrument display unit 22 or the display unit based on the relationship between the gaze position of the driver 40 and the range of each display unit. It is determined which of the in-vehicle device display units 13 is used.

Further, in the display information control unit 11b, the line-of-sight direction of the driver 40 is moved from the instrument display unit 22 or the in-vehicle device display unit 13 to the HUD 21 based on the position of the line-of-sight of the driver 40 determined by the line-of-sight detection unit 11a. When it is determined that the information has been changed, at least a part of the information displayed on the instrument display unit 22 or the in-vehicle device display unit 13 is displayed on the HUD 21.

The display information of at least a part of the information displayed on the instrument display unit 22 or the in-vehicle device display unit 13 includes a main part of the information displayed on the instrument display unit 22 or the in-vehicle device display unit 13. Is preferable.

As the main part of the displayed information, the part of the image displayed on the instrument display unit 22 or the in-vehicle device display unit 13 that the driver 40 was gazing at can be mentioned. As a result, the driver 40 can continuously check the displayed information that he / she was interested in and gazed at even after moving his / her line of sight, so that he / she can concentrate on driving with a margin.

For example, the instrument display unit 22 is displaying the speedometer image 22a and the speedometer image 22b (see FIG. 2), and the driver 40 is gazing at the speedometer image 22a displayed on the instrument display unit 22. At that time, the speedometer image 22a can be used as a main part of the displayed information.

Further, when the in-vehicle device display unit 13 displays the route image having the route information and the title of the song being played, and the driver 40 is gazing at the route image displayed on the in-vehicle device display unit 13. A route image can be used as a main part of the displayed information.

Further, the summary information summarizing the information displayed on the instrument display unit 22 or the in-vehicle device display unit 13 may be used as a main part of the information. For example, when the line of sight of the driver 40 is directed to the instrument display unit 22, the numerical value of the speed and the numerical value of the rotation speed can be used as the main part of the information. Further, when the line of sight of the driver 40 is directed to the in-vehicle device display unit 13 executing the navigation function, the name of the destination and the estimated arrival time at the destination are used as the main parts of the information. be able to.

The HUD display control unit 11c generates a display image based on the display information displayed on the HUD 21, and causes the HUD 21 to display the generated display image.

The instrument display control unit 11d generates a display image based on the display information displayed on the instrument display unit 22, and causes the instrument display unit 22 to display the generated display image. Examples of the image displayed on the instrument display control unit 11d include a speedometer image 22a showing the vehicle speed and a rotometer image 22b showing the engine speed, as shown in FIG.

The navigation unit 11e is a functional module realized by executing the program 12a using the map data 12b, and is a navigation system that guides the route to the destination based on the current position of the vehicle acquired from the GPS information receiving unit 30. Has a function. The navigation unit 11e generates a map image showing a map around the vehicle and voice guidance information based on the map data 12b stored in the storage unit 12 and the position of the vehicle. Further, when the destination is set by the driver 40, the navigation unit 11e derives a route from the current position of the vehicle to the destination and superimposes the route on the map image. The map image generated by the navigation unit 11e is displayed on the vehicle-mounted device display unit 13.

Further, the navigation unit 11e generates a display image based on the display information displayed on the vehicle-mounted device display unit 13 and the like, and displays the generated display image on the vehicle-mounted device display unit 13 and the like. Examples of the image displayed on the in-vehicle device display unit 13 and the like include a map image showing a route, a name of a destination, an enlarged image of an intersection, an estimated time of arrival at the destination, a mileage to the destination, and the like. Be done.

The audio unit 11f is a functional module realized by executing the program 12a, and reads out contents such as music data or video data written in the disk-shaped storage medium stored in the disk drive 15. Further, the audio unit 11f may have a radio or television reception / reproduction function.

Further, the audio unit 11f generates a display image based on the display information displayed on the vehicle-mounted device display unit 13 and the like, and displays the generated display image on the vehicle-mounted device display unit 13 and the like. Examples of the image displayed on the in-vehicle device display unit 13 and the like include the title of the song being played, the playing time of the song being played, the name of the radio station being received and played, the channel of the television, and the like.

Next, the operation of the information display system 1 will be described below.

First, the operation of the information display system 1 for detecting the movement of the driver 40 in the line-of-sight direction will be described below with reference to FIGS. 3 and 4.

First, in step S301, the camera 20 takes an image including the eyes of the driver 40, and transmits the image data of the taken image to the in-vehicle device 10.

Next, in step S303, the line-of-sight detection unit 11a of the processing unit 11 detects the line-of-sight direction of the driver 40 based on the image data received from the camera 20.

Next, in step S305, the display information control unit 11b of the processing unit determines the position of the driver 40's line of sight in the vehicle based on the line-of-sight direction of the driver 40 and the like.

Next, in step S307, the display information control unit 11b has the position of the line of sight of the driver 40 based on the position of the line of sight of the driver 40, whichever is among the HUD 21, the instrument display unit 22, and the in-vehicle device display unit 13. In the case of the display unit of, the display unit to which the line of sight of the driver 40 is directed is determined. The following processing is performed when the position of the line of sight of the driver 40 is any display unit.

Next, in step S309, the display information control unit 11b determines the object information which is the display information of the portion of the image to which the line of sight is directed, based on the gaze position of the driver 40 in the display unit.

Specifically, for example, when the line of sight of the driver 40 is directed to the instrument display unit 22, the display information control unit 11b controls the instrument display control of the gaze position of the driver 40 in the instrument display unit 22. Notify unit 11d. The instrument display control unit 11d displays an object image in the image displayed on the instrument display 22 based on the gaze position of the driver 40 in the instrument display 22 in the image displayed on the instrument display 22. decide. Specifically, the instrument display control unit 11d is based on the relationship between the gaze position of the driver 40 and the range of the speedometer image 22a and the range of the tachometer image 22b displayed on the instrument display 22. The object image that the driver 40 is gazing at is determined. The instrument display control unit 11d notifies the display information control unit 11b of the object information of the determined object image. The above description of the case where the line of sight of the driver 40 is directed to the instrument display unit 22 is similarly applied to the case where the line of sight of the driver 40 is directed to the in-vehicle device display unit 13.

Next, in step S311 the display information control unit 11b determines whether or not the display unit to which the driver 40's line of sight is directed has changed. The display information control unit 11b has a display unit to which the line of sight of the driver 40 determined based on the image of the previous camera 20 is directed and a line of sight of the driver 40 determined based on the image of the camera 20 this time. If the display unit to which the driver 40 is directed is different, it is determined that the display unit to which the driver 40's line of sight is directed has changed, and if not, the display unit to which the driver 40's line of sight is directed is determined to be different. Judge that it has not changed (same).

If the display unit to which the driver 40's line of sight is directed does not change (step S311-No), the process returns to step S301, and the processes of step S301 to step S311 are repeated.

On the other hand, when the display unit to which the driver's line of sight is directed changes (step S311-Yes), the display information control unit 11b counts the time when the driver's line of sight is directed to the current display unit. Start (step S401). Since there are fluctuations in the line of sight of a person, even if the display unit to which the line of sight is directed changes, it does not necessarily mean that the person is watching. Displaying the display information displayed on the previous display unit on the HUD 21 in spite of the fluctuation of the line of sight may hinder the concentration of the driver 40 on driving. If the time the driver 40 is gazing at the current display unit is longer than a predetermined time, it is presumed that there is no fluctuation. Therefore, in order to determine whether or not the line of sight is fluctuating, the time during which the current display unit is being watched is counted.

Next, in step S403, the display information control unit 11b determines whether or not a predetermined time has elapsed after the line of sight of the driver 40 has moved from the previous display unit to the current display unit. When the predetermined time has elapsed, the display information control unit 11b determines that the line-of-sight direction of the driver 40 has moved. If this is not the case, it is determined that the line-of-sight direction of the driver 40 has not moved. The predetermined time can be, for example, 0.5 seconds.

When the line-of-sight direction of the driver 40 moves (step S403-Yes), it is determined that the movement of the driver 40 in the line-of-sight direction is not a fluctuation in the line-of-sight direction, and the process shown in FIG. 5 is started (step S501). ).

When the line-of-sight direction of the driver 40 has not moved (step S403-No), the display information control unit 11b determines whether or not the line-of-sight of the driver 40 has moved (step 405). Specifically, the processes of steps S301 to S311 are performed. Then, when the line-of-sight direction of the driver 40 has not moved (step S405-No), the process returns to step S403.

When the line-of-sight direction of the driver 40 moves (step S403-Yes), the movement of the driver 40 in the line-of-sight direction is determined to be a fluctuation of the line-of-sight, and the process returns to step S301.

The processes shown in FIGS. 3 and 4 are continuously performed, and the movement of the driver 40 in the line-of-sight direction is constantly monitored.

Next, as shown in FIG. 2, the operation of the information display system 1 is performed when the line-of-sight direction of the driver 40 moves from the HUD 21 to the speedometer image 22a of the instrument display unit 22 and then moves to the HUD 21 again. This will be described below with reference to FIG.

In step S501, the display information control unit 11b starts counting the display time for displaying the object information (display information of the speedometer image 22a) displayed on the instrument display unit 22 on the HUD 21.

Next, in step S503, the display information control unit 11b notifies the instrument display control unit 11d of a request for object information (display information of the speedometer image 22a) that the driver is looking at. Here, the object information is information used to generate an object image (speedometer image 22a).

Next, in step S505, the instrument display control unit 11d notifies the display information control unit 11b of the object information (display information of the speedometer image 22a) that the driver is looking at.

Next, in step S507, the display information control unit 11b notifies the HUD display control unit 11c of the object information (display information of the speedometer image 22a) notified from the instrument display control unit 11d.

Next, in step S509, the HUD display control unit 11c generates an object image (speedometer image 22a) based on the object information (display information of the speedometer image 22a) notified from the display information control unit 11b. The generated object image (speedometer image 22a) is displayed on the HUD21.

Here, the HUD display control unit 11c determines a display start position for displaying the object image (speedometer image 22a) in the HUD 21 based on the direction in which the line of sight of the driver 40 moves from the instrument display unit 22 to the HUD 21. do.

FIG. 6 is a diagram showing an object image displayed on the HUD.

In the example shown in FIG. 6, the display start position for displaying the object image (speedometer image 22a) in the HUD 21 is inside the contour of the HUD 21 that intersects the moving direction of the driver 40's line of sight from the instrument display unit 22 to the HUD 21. Is decided on. The object image (speedometer image 22a) is first displayed at the display start position in the HUD 21, as shown by the chain line. As a result, it is possible to suppress a sense of discomfort that occurs in the driver's field of vision looking ahead and reduce the influence on driving.

Next, in step S511, the display information control unit 11b determines whether or not the display time of the object image (speedometer image 22a) in the HUD 21 exceeds a predetermined time. As for this predetermined time, it is sufficient that a time that can be confirmed by looking at the information displayed on the object image (speedometer image 22a) is secured. The predetermined time can be, for example, 5 to 10 seconds. Further, this predetermined time may be changed according to the object information. For example, if the information is visually easy to understand, the time may be shortened, and if the information is not easy to understand, the time may be lengthened.

If the line of sight of the driver 40 is directed to the object image (speedometer image 22a) while the object image (speedometer image 22a) is displayed on the HUD 21, the predetermined time may be extended. good.

When the display time of the object image (speedometer image 22a) exceeds a predetermined time (step S511-Yes), the display information control unit 11b fades out the object image (speedometer image 22a) and erases it. Notify the HUD display control unit 11c (step S513).

Then, the HUD display control unit 11c fades out the object image (speedometer image 22a) displayed on the HUD 21 and erases it (step S513). As a result, the driver 40 who has confirmed the speed information can be made to pay attention to the driving by widening the field of view in front of the driver 40. When erasing the object image displayed on the HUD 21, the object image may be erased by using another mode as long as it does not interfere with the driver 40's gaze forward.

On the other hand, when the display time of the object image (speedometer image 22a) does not exceed a predetermined time (step S511-No), the process returns to step 503, and the processes of steps S503 to S511 are repeated.

Here, as shown in FIG. 6, the HUD display control unit 11c displays the object image (speedometer image 22a) at the display start position in the HUD 21, and then displays the object image (speedometer image 22a) in the HUD 21. After moving while displaying from the display start position to the position of the upper right corner, the display may be continued at the position of the upper right corner. As a result, the object image (speedometer image 22a) can be displayed at a position in the HUD 21 that does not obstruct the field of view, and the field of view in front of the driver can be secured. Here, since the object image (speedometer image 22a) is generated based on the same display information as the speedometer image displayed on the instrument display unit 22, the displayed speed changes according to the speed change of the vehicle. Is displayed on HUD21.

According to the information display system 1 of the present embodiment described above, according to the movement of the driver 40 in the line-of-sight direction, the information displayed on the instrument display unit 22 before the movement of the line of sight is transferred to the HUD 21 after the movement of the line of sight. Can be displayed. Therefore, by reducing the frequency of movement of the line of sight of the driver 40, the driver 40 can pay attention to the driving by looking ahead through the HUD 21.

Next, a second embodiment of the above-mentioned information display system will be described below with reference to FIGS. 7 to 10. With respect to points that are not particularly described with respect to the second embodiment, the above-mentioned detailed description of the first embodiment is appropriately applied. Further, the same components are designated by the same reference numerals.

In the information display system 1 of the present embodiment, as shown in FIGS. 7 and 8, after the line-of-sight direction of the driver 40 moves from the HUD 21 to the intersection enlarged image 13b (see FIG. 8) of the in-vehicle device display unit 13. The operation of the information display system 1 will be described below with reference to FIG. 9 in the case of moving to the HUD 21 again. Here, as shown in FIG. 8, the vehicle-mounted device display unit 13 displays a route image 13a showing the route information and an intersection enlarged image 13b showing the traveling direction at the intersection.

Hereinafter, when the line-of-sight direction of the driver 40 moves from the HUD 21 to the intersection enlarged image 13b of the in-vehicle device display unit 13 and then moves to the HUD 21 again, the operation of the information display system 1 is described. This will be described below with reference to FIG.

First, in step 901, the display information control unit 11b starts counting the display time for displaying the object information (display information of the speedometer image 22a) displayed on the instrument display unit 22 on the HUD 21.

Next, in step S903, the display information control unit 11b receives the object information (display information of the intersection enlarged image 13b) that the driver is looking at from the navigation unit 11e and displays the HUD so as to display it on the HUD 21. Notify the control unit 11c. Here, the object information (display information of the intersection enlarged image 13b) is information used to generate the object image (intersection enlarged image 13b).

Next, in step S905, the HUD display control unit 11c notifies the navigation unit 11e of a request for object information (display information of the intersection enlarged image 13b) that the driver is looking at.

Next, in step S907, the navigation unit 11e notifies the HUD display control unit 11c of the object information (display information of the intersection enlarged image 13b) that the driver is looking at.

Next, in step S909, the HUD display control unit 11c generates an object image (intersection enlarged image 13b) based on the object information (display information of the intersection enlarged image 13b) notified from the navigation unit 11e, and generates the object image (intersection enlarged image 13b). The object image (intersection enlarged image 13b) is displayed on the HUD 21.

The HUD display control unit 11c determines a display start position for displaying the object image (intersection enlarged image 13b) in the HUD 21 based on the direction in which the driver 40's line of sight moves from the vehicle-mounted device display unit 13 to the HUD 21.

FIG. 10 is a diagram showing an object image displayed on the HUD.

In the example shown in FIG. 10, the display start position for displaying the object image (intersection enlarged image 13b) in the HUD 21 is the contour of the HUD 21 that intersects the moving direction of the driver 40's line of sight from the in-vehicle device display unit 13 to the HUD 21. It is decided on the inside. The object image (intersection enlarged image 13b) is first displayed at the display start position in the HUD 21, as shown by the chain line. As a result, it is possible to suppress a sense of discomfort that occurs in the driver's field of vision looking ahead and reduce the influence on driving.

Next, in step S911, the display information control unit 11b determines whether or not the display time of the object image (intersection enlarged image 13b) in the HUD 21 exceeds a predetermined time. As for this predetermined time, it is sufficient that a time that can be confirmed by looking at the information displayed on the object image (intersection enlarged image 13b) is secured. The predetermined time can be, for example, 5 to 20 seconds.

When the display time of the object image (intersection enlarged image 13b) exceeds a predetermined time (step S911-Yes), the display information control unit 11b fades out the object image (intersection enlarged image 13b) and erases it. Notify the HUD display control unit 11c (step S913).

The HUD display control unit 11c fades out the object image (intersection enlarged image 13b) displayed on the HUD 21 and erases it (step S913). As a result, the driver 40 who has confirmed the route information can be made to pay attention to the driving by widening the field of view in front of the driver 40.

On the other hand, if the display time of the object image (intersection enlarged image 13b) does not exceed a predetermined time (step S911-No), the process returns to step 905, and the processes of steps S905 to S911 are repeated.

As shown in FIG. 10, the HUD display control unit 11c displays the object image (intersection enlarged image 13b) at the display start position in the HUD 21, and then displays the object image (intersection enlarged image 13b) at the display start position in the HUD 21. After moving while displaying from to the position of the upper right corner, the display may be continued at the position of the upper right corner. As a result, the object image (intersection enlarged image 13b) can be displayed at a position in the HUD 21 that does not obstruct the field of view, and the field of view in front of the driver can be secured. Here, since the object image (intersection enlarged image 13b) is generated based on the same display information as the intersection enlarged image displayed on the in-vehicle device display unit 13, the intersection enlarged displayed according to the position of the traveling vehicle. The image is also changed and displayed.

According to the information display system 1 of the present embodiment described above, according to the movement of the driver 40 in the line-of-sight direction, the information displayed on the in-vehicle device display unit 13 before the movement of the line of sight is changed to the HUD 21 after the movement of the line of sight. Can be displayed on. Therefore, by reducing the frequency of movement of the line of sight of the driver 40, the driver 40 can pay attention to the driving by looking ahead through the HUD 21.

In the present invention, the information display method and the information display device of the above-described embodiment can be appropriately changed as long as the gist of the present invention is not deviated. Further, the constituent requirements of one embodiment can be appropriately applied to other embodiments.

For example, in the first embodiment described above, the HUD display control unit may directly receive the notification of the object information from the instrument display control unit as in the second embodiment. Further, in the second embodiment described above, the HUD display control unit may receive notification of object information from the navigation unit via the display information control unit as in the first embodiment.

Further, in the first embodiment described above, the display unit before movement is an instrument display unit, but the display unit before movement is a speedometer (or rotation speedometer) that displays a mechanical speed. May be good. The information display control unit uses a mechanical speedometer (or tachometer) to determine the position of the driver's line of sight based on the position of the driver's line of sight and the position information of each part such as the HUD in the vehicle. Decide to be. Then, the information display control unit may cause the HUD display control unit to display the vehicle speed information (or rotation speed information) on the HUD.

Further, after the driver's line of sight moves to the previous display unit, the above-mentioned predetermined time (for example, 0.5 seconds) elapses, and then the second predetermined time (for example, 5 seconds) elapses. If it has passed, when the driver's line of sight moves to a new display unit after that, the new display unit stops displaying the information displayed on the previous display unit. It may be set (not displayed). Specifically, for example, the driver moves the line of sight from the HUD to the instrument display unit or the in-vehicle device display unit, keeps the line of sight on the instrument display unit or the in-vehicle device display unit for 5 seconds or longer, and then moves the line of sight to the HUD again. In such a case (returning the line of sight), the information displayed on the instrument display unit or the in-vehicle device display unit may be stopped (not displayed) on the HUD. If the driver is gazing at the information displayed on the instrument display or the in-vehicle device display for a sufficient period of time, it is considered that he / she fully understands the information he / she was gazing at. This is because it does not have to be displayed on the HUD.

Further, in each of the above-described embodiments, when the driver's line of sight moves from the instrument display unit or the vehicle-mounted device display unit to the HUD, at least one of the information displayed on the instrument display unit or the vehicle-mounted device display unit is displayed. The display information of the unit was displayed on the HUD, but conversely, when the user's line of sight moves from the HUD to the instrument display unit or the in-vehicle device display unit, at least a part of the information displayed on the HUD. The display information of may be displayed on the instrument display unit or the in-vehicle device display unit.

Furthermore, when the driver's line of sight moves from the in-vehicle device display unit displaying the audio information to the HUD, at least a part of the audio information displayed on the in-vehicle device display unit is displayed. It may be displayed on the HUD.

1 Information display system 10 In-vehicle device 11 Processing unit 11a Line-of-sight detection unit 11b Display information control unit 11c HUD display control unit 11d Instrument display control unit 11e Navigation unit 11f Audio unit 12 Storage unit 12a Program 12b Map data 13 In-vehicle device display unit 13a Route Image 13b Enlarged image of intersection 14 Input unit 15 Disk drive 16 Communication unit 20 Camera 21 Head-up display (HUD)
22 Instrument display 22a Speedometer image 22b Rotometer image 30 GPS information receiver 40 Driver (user)

Claims (5)

And possible to detect the direction of the line of sight of the user,
When the user's line of sight moves from the first display unit to the second display unit, the first display unit is based on the direction in which the user's line of sight moves from the first display unit to the second display unit. Determining the first position to display the display information, which is the summary information summarizing the displayed information, in the second display unit, and
Displaying the display information at the first position of the second display unit , and
After displaying the display information at the first position in the second display unit, the display information is moved while being displayed from the first position to the second position in the second display unit.
Information display method including. The information display according to claim 1, further comprising erasing the display information displayed on the second display unit after a predetermined time has elapsed after displaying the display information on the second display unit. Method. The first or second aspect of claim 1 or 2, further comprising deciding whether or not to display the display information on the second display unit based on the time when the user has turned his / her line of sight to the first display unit. Information display method. Detects the user's line of sight and
When the user's line of sight moves from the first display unit to the second display unit, the first display unit is based on the direction in which the user's line of sight moves from the first display unit to the second display unit. A first position for displaying at least a part of the displayed information in the second display unit is determined.
Information display including displaying the display information at the first position in the second display unit and then moving the display information while displaying the display information from the first position to the second position in the second display unit. Method. 1st display and
2nd display and
A line-of-sight detector that detects the user's line-of-sight direction,
Based on the direction in which the user's line of sight moves from the first display unit to the second display unit when the line-of-sight direction of the user detected by the line-of-sight detection unit moves from the first display unit to the second display unit. Therefore, a first position for displaying at least a part of the display information displayed on the first display unit in the second display unit is determined, and the display information is displayed on the second display unit. A processing unit that moves the display information while displaying it from the first position to the second position in the second display unit after displaying it at the first position.
An information display device comprising.

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